Question

Упростите пж СРОЧНО!!!

Answer 1

1) $frac{1}{ a^{2}-4 }* frac{(a+2) ^{2} }{a} = frac{(a+2) ^{2} }{(a+2)(a-2)a}= frac{a+2}{a(a-2)}$
2) $frac{a+6}{ a^{2}-4 } - frac{a+2}{a(a-2)} =$$frac{ a^{2}+6a- a^{2} -4a-4 }{a( a^{2}-4) } = frac{2a-4}{a( a^{2}-4) }= frac{2(a-2)}{a(a-2)(a+2)} = frac{2}{a(a+2)}$